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https://github.com/brain-hackers/u-boot-brain
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903d384d40
In commit <a058052c358c> [net: phy: do not read configuration register on reset], phy_reset() will clear the BMCR register. Bit 12(AUTO_NEGOTIATION) is cleared too. It causes auto-negotiation timeout error on Atheros's PHY AR8033. To fix this problem, genphy_config_aneg() and genphy_restart_aneg() needs to be called in ar8035_config() to enable and restart auto-negotiation. Signed-off-by: Alison Wang <alison.wang@nxp.com> Acked-by: Stefan Agner <stefan@agner.ch> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
/*
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* Atheros PHY drivers
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*
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* SPDX-License-Identifier: GPL-2.0+
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*
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* Copyright 2011, 2013 Freescale Semiconductor, Inc.
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* author Andy Fleming
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*/
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#include <phy.h>
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static int ar8021_config(struct phy_device *phydev)
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{
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phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
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phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x3D47);
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phydev->supported = phydev->drv->features;
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return 0;
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}
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static int ar8035_config(struct phy_device *phydev)
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{
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int regval;
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phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x0007);
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phy_write(phydev, MDIO_DEVAD_NONE, 0xe, 0x8016);
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phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x4007);
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regval = phy_read(phydev, MDIO_DEVAD_NONE, 0xe);
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phy_write(phydev, MDIO_DEVAD_NONE, 0xe, (regval|0x0018));
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phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
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regval = phy_read(phydev, MDIO_DEVAD_NONE, 0x1e);
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phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, (regval|0x0100));
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phydev->supported = phydev->drv->features;
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genphy_config_aneg(phydev);
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genphy_restart_aneg(phydev);
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return 0;
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}
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static struct phy_driver AR8021_driver = {
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.name = "AR8021",
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.uid = 0x4dd040,
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.mask = 0x4ffff0,
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.features = PHY_GBIT_FEATURES,
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.config = ar8021_config,
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.startup = genphy_startup,
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.shutdown = genphy_shutdown,
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};
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static struct phy_driver AR8031_driver = {
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.name = "AR8031/AR8033",
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.uid = 0x4dd074,
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.mask = 0xffffffef,
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.features = PHY_GBIT_FEATURES,
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.config = ar8035_config,
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.startup = genphy_startup,
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.shutdown = genphy_shutdown,
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};
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static struct phy_driver AR8035_driver = {
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.name = "AR8035",
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.uid = 0x4dd072,
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.mask = 0xffffffef,
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.features = PHY_GBIT_FEATURES,
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.config = ar8035_config,
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.startup = genphy_startup,
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.shutdown = genphy_shutdown,
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};
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int phy_atheros_init(void)
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{
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phy_register(&AR8021_driver);
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phy_register(&AR8031_driver);
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phy_register(&AR8035_driver);
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return 0;
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}
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